they are behind problems with syria, problems with hezbollah, with hamas. they are destabilize go to israel. we may be on different time track than their nuclear weapons problem. so, there is going to come on a time we have to make a different decision? >> we've always said all options is on the table. the president has been clear on that. i am glad you raised the terrorism as peculiar of iran's behavior. there is so much attention on the effort to prevent them from getting a nuclear weapon that we sometimes overlook the active efforts by the iranian revolutionary guard, their proxies like the lebanese hezbollah, to engage asags nations, bombings, destabilizing countries. that has been a very challenging ongoing threat. for a while, i have to tell you, when i came into office there were too many countries that were turning a blind eye to it. we have worked very hard to get the international community particularly the region, europe and elsewhere to say wait a minute. these guys need to be stopped on the terrorism front. they can't be permitted to go forward